Original Research
Copyright ©The Author(s) 2001.
World J Gastroenterol. Dec 15, 2001; 7(6): 801-804
Published online Dec 15, 2001. doi: 10.3748/wjg.v7.i6.801
Figure 1
Figure 1 Odds ratios and summary odds ratio with 95%CI of 11 case-control studies.